Defensive publication

ABSTRACT

THERE ARE DISCLOSED PHOTOGRAPHIC EMULSIONS CONTAINING SILVER HALIDE-DIAMINE COMPLEXES. RADIATION-SENSITIVE PAPERS OF THE PRINT-OUT TYPE COATED WITH SUCH COMPLEXES ARE ALSO DISCLOSED. THE COMPLEXES ARE REPRESENTED BY THE FORMULA ((AGX)2 DIAMINE) WHEREIN X IS A HALOGEN ATOM. EXEMPLARY OF SUCH COMPOUNDS ARE THE FOLLOWING COMPLEXES: SILVER CHLORIDE-ETHYLENEDIAMINE   ((AGCL)2NH2CH2CH2NH2)   SILVER BROMIDE-ETHYLENEDIAMINE   ((AGBR)2NH2CH2CH2NH2)   SILVER IODIDE-ETHYLENEDIAMINE ((AGI)2NH2CH2CH2NH2); SILVER CHLORIDE-PROPYLENEDIAMINE   ((AGCL)2NH2CH2CH2CH2NH2)   SILVER BROMIDE-PROPYLENEDIAMINE   ((AGBR)2NH2CH2CH2CH2NH2)   SILVER IODIDE-PROPYLENEDIAMINE   ((AGI)2NH2CH2CH2CH2NH2)   EFFECTIVE COMPLEXES INCLUDE THE SILVER HALIDE-ALKYLENE DIAMINES SUCH AS SILVER HALIDE-ETHYLENEDIAMINE, SILVER HAPER SQUARE FOOT OF SURFACE. ALTHOUGH THE OPTICAL BRIGHTENTERS OF THE INVENTION HAVE PARTICULAR APPLICABILITY TO PHOTOGRAPHIC ELEMENTS, THEIR USE IS NOT LIMITED THERETO. THEY MAY ALSO BE USED, FOR INSTANCE, IN LIGHTING PANELS; IN VARIOUS TYPE OF PLASTIC COMPOSITIONS, IN INKS, PAINTS AND THE LIKE OR IN ANY APPLICATION APPLIED TO A SURFACE OR IN A FILM FOR THE EMISSION OF VISIBLE LIGHT UPON EXPOSURE TO ULTRAVIOLET LIGHT. ILLUSTRATIVE COMPOUNDS USEFUL AS OPTICAL BRIGHTENERS IN ACCORDANCE WITH THE PRESENT INVENTION ARE: 3-METHYLFURO(2,3-B)QUINOXALIN-2(4H)-ONE 3-PHENYLFURO(2,3-B)QUINOXALINE-2(4H)-ONE 3-METHYL-4-N-OCTYL-FURO(2,3-B)-2(4H)-ONE 3-METHYL-4-N-OCTADECYLFURO(2,3-B)QUINOXALIN-2(4H)-ONE 3-DECYLFURO(2,3-B)QUINOXALIN-2(4H)-ONE 2-METHYL-3-DECYLFURO(2,3-B)QUINOXALINE-2(4H)-ONE THE PHOTOGRAPHIC SILVER HALIDE EMULSIONS AND ELEMENTS CONTAINING THE OPTICAL BRIGHTENERS CAN BE CHEMICALLY SENSITIZED, E.G., WITH NOBLE METAL SENSITIZERS ALONE OR IN COMBINATION WITH SULFUR OR SELENIUM SENSITIZERS. THEY CAN CONTAIN SPECTRAL SENSITIZERS, INCORPORATED COLOR-FORMING COUPLERS, INCORPORATED DEVELOPING AGENTS, ANTIFOGGANTS, HARDENERS, PLASTICIZERS, COATING AIDS, AND OTHER SUITABLE PHOTOGRAPHIC ADDENDA, SUCH AS DESCRIBED IN U.S. PAT. 3,297,446 (COLUMNS 4-9).

DEFENSIVE PUBLICATION UNITED STATES PATENT OFFICE Published at therequest of the applicant or owner in accordance with the Notice of Dec.16, 1969, 869 0.G. 687. The abstracts of Defensive Publicationapplications are identified by distinctly numbered series and arearranged chronologically. The heading of each abstract indicates thenumber of pages of specification. including claims and sheets ofdrawings contained in the application as originally filed. The files ofthese applications are available to the public for inspection andreproduction may be purchased for 30 cents a sheet.

Defensive Publication applications have not been examined as to themerits of alleged invention. The Patent Oflice makes no assertion as tothe novelty of the disclosed subject matter.

PUBLISHED FEBRUARY 2, 1971 T883,015 SILVER HALIDE PRINTOUT PHOTOGRAPHICMATERIALS Robert D. Lindholm, Kodak Park Works, Rochester, NY. 14650Filed June 1, 1970, Ser. No. 42,594 Int. Cl. G03c 1/02 U.S. Cl. 96114.6No Drawing. 9 Pages Specification There are disclosed photographicemulsions containing silver halide-diamine complexes.Radiation-sensitive papers of the print-out type coated with suchcomplexes are also disclosed. The complexes are represented by theformula [(AgX) diamine] wherein X is a halogen atom. Exemplary of suchcompounds are the following complexes: silver chloride-ethylenediamine(AgCl NH CH CH NH silver bromide-ethylenediamine (AgBr) NH CH CH NHsilver iodide-ethylenediamine [(AgI) NH CH CH NH silverchloride-propylenediamine )2 2 2 2 2 2] silver bromide-propylenediamine(AgBr) NH cH CH CH NH silver iodide-propylenediamine Effective complexesinclude the silver halide-alkylene diamines such as silverhalide-ethylenediarnine, silver halide propylenediamine, silver halidetetramethylenediamine, silver halide-pentamethylenediamine, silverhalidehexamethylenediamine, etc.

